Geometrical and physical optics models for calculating the closed-cavity power of a cw supersonic diffusion chemical laser are presented. The mixing and kinetic gain medium formulation employed in these calculations is described along with its anchoring to HF small signal gain data. Mixing parameters thus established are used to compute the closed-cavity power and spectral distribution with the two models, which agree reasonably well with experimental data. The reasonably good agreement between the two models in their computed spectra, intensity, and loaded gain distributions indicates that in many applications the use of the more economical geometric model may be adequate for extensive closed-cavity power computations and performance analyses of chemical lasers.

© 1983 Optical Society of America

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